Twitch Support Revealed for PS4

PS4 owners will be able to stream and commentate their games for the ultimate sharing and spectator experience
Twitch has announced announced that PS4 system users worldwide, by simply hitting the Share button on the DUALSHOCK 4 wireless controller, will be able to broadcast their gameplay directly to their Twitch channels. In addition, users will be able to view content streamed to the Twitch community from other PS4 gamers.
PS4 users will be able to fully utilize Twitch's broadcast and viewing features for free.